Computer security and malware by shahzad younas
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The document addresses computer security, particularly focusing on concepts such as confidentiality, integrity, and availability, collectively known as the CIA triad. It discusses various types of malware, including viruses, worms, and Trojans, along with common cyber threats like phishing and spam. Additionally, it highlights protection measures like antivirus software, firewalls, and authentication methods to safeguard information and systems.
Computer security and malware by shahzad younas
- 1. Computer Security By Shahzad Younas Superior University Depalpur E-Mail: shzadyounas@gmail.com
- 3. Topic : Computer Security Group Name: Anmol Group Group Leader Shahzad Younas Group Members Ansar Sohail Ali Shahzad Fiaz Tabish
- 4. Objectives Computer Security Computer Security CIA TrailCIA Trail MalwareMalware Email Related Issue Email Related Issue Cyber VillainsCyber Villains ProtectionProtection AuthenticationAuthentication ReferencesReferences
- 5. Computer Security Computer security is the field which tries to keep computer safe and secure.
- 6. What does it mean to be secure? • Include protection of information from theft or corruption, or the preservation of availability, as defined in the security policy.
- 7. CIA Trial It is combination of principles. Security Objectives: Confidentiality Availability Integrity
- 8. Confidentiality • The information must just be accessible to the authorized people • Confidentiality is keeping information secret or private. • Confidentiality might be important for military, business or personal reasons.
- 9. Integrity • Integrity is the unauthorized writing or modification of information. • Guarantee that the data is what we expect. • Messages can’t be modified without detection.
- 10. Availability • System and networks must be up and running. • Availability is the prevention of unauthorized withholding of information.
- 11. Malware • Malware (short for malicious software)is any software specifically designed to damage a computer system without owner knowledge. Examples: Trojan Horses Viruses Worm
- 12. Trojan Horse • A Trojan Horse is program that is packaged with a useful application, usually free, such as a screen or game saver, but carries a destructive virus, that creates problems for your computer without your knowledge.
- 13. Trojan Horse
- 14. Some example of Trojan Horse – TrojanDownloader:Win32/Zlob.gen!dll – Trojan.Popuper.origin – Downloader.Zlob.LI
- 15. Virus • A computer virus is small software program that can spread from one computer system to another and cause interferences with computer operations.
- 16. Worm • A worm is a type of malicious software (malware) that copies itself repeatedly into a computers memory.
- 17. Email Related Issues • Spam • Phishing • Pharm • Web jack
- 18. Spam • Spam is flooding the Internet with many copies of the same message, in an attempt to force the message on people who would not otherwise choose to receive it. • It is also known as Bulk-email or Junk email
- 19. Spam
- 20. Phishing: Example: • You type, by mistake, “gmale.com” instead of “gmail.com” • gmale.com designs the site to look like gmail.com so the user types in their info as usual • BAD! Now an evil person has your info! A fake login page to be a trusted login page.
- 22. Pharm • Software that's planted on a computer; redirects to impostor web page even though you type in the right URL. You can protect yourself against it by going to websites that contain https not http.
- 24. Hacker • Hacker is a term used by some to mean "a clever programmer" and by others, especially those in popular media, to mean "someone who tries to break into computer systems.
- 25. Cracker • A cracker also a someone who access a computer or network illegally but has the intent of destroying data, stealing information or other malicious action. • Both hacker and cracker have advanced computer and network skills.
- 26. Cyber terrorism • Cyber terrorism can be also defined as the intentional use of computer, networks, and public internet to cause destruction and harm for personal objectives. Objectives may be political or ideological since this can be seen as a form of terrorism.
- 27. Hacker Activists • "Hacker Activists" are people with a politically or socially motivated purpose who break into a computer system. "Hacker Activists" are people with a politically or socially motivated purpose who break into a computer system.
- 29. Antivirus • Scans primary and secondary storage Devices. • Detect & Destroy them. • Keep update antivirus software. It works in 2 ways: 1.It scans files to look for known viruses to compare to a virus dictionary. 2. It analyzes suspicious behavior of computer programs
- 30. Antivirus Software • http://free.grisoft.com (AVG Antivirus Free) • http://www.symantec.com/nav/nav_9xnt/ (Norton Antivirus) • http://www.sophos.com/products/sav/ (Sophos Antivirus) • http://www.pandasoftware.com/home/default.asp (Titanium Antivirus) • http://www.trendmicro.com/en/home/us/personal.htm (Trend Micro PC-cillin) • http://www.mcafee.com (McAfee VirusScan) Online Antivirus Checkups •http://housecall.trendmicro.com/ •http://www.pandasoftware.com/products/activescan.htm Some links where we can find free antivirus software.
- 31. Firewall • Windows Firewall (or any other firewall) can help alert you to suspicious activity if a virus or worm attempts to connect to your computer. It can also block viruses, worms, and hackers from attempting to download potentially harmful programs to your computer.
- 32. Some Firewall Software • http://www.zonealarm.com (ZoneAlarm) • http://www.mcafee.com (McAfee Personal Firewall) • http://www.symantec.com/sabu/nis/npf/ (Norton Personal Firewall)
- 33. Encryption • Turning readable data into a form of unreadable data in order to prevent access that is not authorized Often used in the military.
- 34. Authentication Authentication is the process of determining whether someone or something is, in fact, who or what it is declared to be. Examples: • Password • Biometrics • Palm/Finger Print
- 35. Password • A password or watchword is a form of authentication used to guard or control a "resource" Tips for Creating Secure Passwords • http://www.microsoft.com/athome/security/privacy/password.mspx • http://www.us-cert.gov/cas/tips/ST04-002.html • http://www.symantec.com/homecomputing/library/pass_w.html Use complex password: Hint: iMnew145
- 36. Biometrics • Biometrics is the science of measuring of human physical or behavioral characteristics.
- 37. Palm/Finger Print • Palm/Finger print scanning is a unique way to protect your privacy. You run your finger across a window or sensor to identify yourself.
- 38. Iris/Face • Iris/ face scans are very reliable identifiers. Each individual person has different eyes and face shape, making this type of scan very effective.
- 39. Voice • A systems that extract features from speech patterns in order to recognize someone's voice which is then digitalized and stored
- 40. References • (http://www.pcworld.com/article/id,144017- c,internetlegalissues/article.htm) • (http://en.wikipedia.org/wiki/Firewall_(networking)) • http://www.questbiometrics.com • http://www.nationalbiometric.org/ • http://www.news.com/2100-1001-205144.html